US Bridges

Ramp to EB I-64 over I-55 EB Mainline

Fair

St. Clair County, Illinois · West of Exchange Ave · Structure no. 082000300000000

Built
1962
63 years old, rebuilt 1992
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
74 ft
1 main span
Daily traffic
37,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp to EB I-64 over I-55 EB Mainline is a steel stringer/multi-beam or girder carrying Ramp to EB I-64 over I-55 EB Mainline in St. Clair County, Illinois. It was built in 1962 and reconstructed in 1992, so it is 63 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 37,250 vehicles a day, roughly 13% of them trucks, projected to reach 3,182 by 2046. The structure is 74 ft (22.7 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRamp to EB I-64
CrossesI-55 EB Mainline
LocationWest of Exchange Ave
RouteInterstate 64
CountySt. Clair County
StateIllinois
Coordinates38.63321, -90.14422
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating57.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length74 ft (22.7 m)
Longest span71 ft (21.6 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,250 (2023)
Projected traffic3,182 by 2046
Trucks13%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$431,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp to EB I-64 over I-55 EB Mainline built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1992.

What condition is Ramp to EB I-64 over I-55 EB Mainline in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does Ramp to EB I-64 over I-55 EB Mainline carry?

About 37,250 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Ramp to EB I-64 over I-55 EB Mainline?

The structure is 74 ft (22.7 m) long with a longest span of 71 ft (21.6 m) and a deck 36 ft wide.

Who owns Ramp to EB I-64 over I-55 EB Mainline?

It is owned by the State Highway Agency.